assertion  retraction  graph  subject       predicate        object    datatype    annotation
1          0           graph  DOID:525      rdfs:subClassOf  DOID:865  _IRI        
1          0           graph  DOID:865      oio:id           DOID:865  xsd:string  
1          0           graph  DOID:0040099  rdfs:subClassOf  DOID:865  _IRI        
1          0           graph  DOID:9810     rdfs:subClassOf  DOID:865  _IRI        
1          0           graph  DOID:13241    rdfs:subClassOf  DOID:865  _IRI